#include "stdio.h"

int main()
{
    FILE *fp;
    char ch;

    if((fp=fopen("casel.in.txt","r"))==NULL)
        return 0;
    while((ch=(fgetc(fp)))!=EOF)
    {
       if(ch>='0'&&ch<='9')
       {
          printf("%c",ch);
       }
    }
    fclose(fp);
}
